(2S,3R,4R,5S,6S)-2-bromo-6-methyltetrahydro-2H-pyran-3,4,5-triyl triacetate CAS 5158-64-5
| CAS No. | 5158-64-5 |
| Molecular Formula | C12H17BrO7 |
| Molecular Weight | 353.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
(2S,3R,4R,5S,6S)-2-bromo-6-methyltetrahydro-2H-pyran-3,4,5-triyl triacetate (CAS 5158-64-5) is a high-purity analytical reference standard with the molecular formula C12H17BrO7 and a molecular weight of 353.16 g/mol.
Structurally, (2S,3R,4R,5S,6S)-2-bromo-6-methyltetrahydro-2H-pyran-3,4,5-triyl triacetate (C12H17BrO7) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 353.16 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), (2S,3R,4R,5S,6S)-2-bromo-6-methyltetrahydro-2H-pyran-3,4,5-triyl triacetate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C12H17BrO7 |
| Molecular Weight | 353.16 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Br-containing |
Recommended Standards
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